Title:
EYE DIAGRAM DISPLAY DEVICE AND EYE DIAGRAM DISPLAY METHOD
Document Type and Number:
Japanese Patent JP2017142090
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To highly accurately predict a desired eye diagram and display the same.SOLUTION: The number of measurement points and a bit error rate measurement range are set by an operation unit 3a. A control unit 3b finds the center of an eye diagram by an auto search, changes a phase and a threshold voltage so as for the phase and the threshold voltage to be individually taken from the found center in a bifurcated search and searches for an actual measurement point, sets the threshold voltage to a point between the center of the eye diagram and the actual measurement point, changes the phase so as for the phase to be taken in a bifurcated search and searches for the actual measurement point, draws a bathtub curve from the result of a measurement point in the middle of a bifurcated search and calculates a temporary prediction point, and predicts a desired eye diagram, using the intersection of a line segment linking each of calculated temporary prediction points and a line segment linking between the actual measurement point and the center of the eye diagram as a prediction result point.SELECTED DRAWING: Figure 1
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Inventors:
IWAI TATSUYA
Application Number:
JP2016022063A
Publication Date:
August 17, 2017
Filing Date:
February 08, 2016
Export Citation:
Assignee:
ANRITSU CORP
International Classes:
G01R13/20; H04L25/02
Domestic Patent References:
| JPH07264248A | 1995-10-13 | |||
| JP2011232217A | 2011-11-17 | |||
| JP2008014916A | 2008-01-24 | |||
| JP2008521272A | 2008-06-19 | |||
| JP2011015142A | 2011-01-20 | |||
| JPH04269034A | 1992-09-25 | |||
| JP2006234821A | 2006-09-07 |
Foreign References:
| US7743288B1 | 2010-06-22 |
Attorney, Agent or Firm:
Norimitsu Nishimura
Noriyuki Suzuki
Noriyuki Suzuki